Window-tensioning device



Aug. 27, 1929. E. E. 'SMITH wINDQw TENsIoNING DEVICE Filed Jari. 25, 1928 0R. I v 5%.

INV NT Bmw ATTORNEYS.

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Patented Aug. 27, 1929.

UNITED STATES EDWARD E. SMITH, OF PROVIDENCE, RHODE ISLAND.

WINDOW-TENSIONING DEVICE.

'Application fue@ January 25, 192s. serial No. 249,417.

This invention relates to a window tensioning device, and has for its ob3ect-to provide in a window of the type in which the sash slides vertically in the frame, means for 'exerting a yielding tension between the sash and the frame to hold the sash against rattling.

A further object of the invention is the provision insuch a vertically slidable window of a short length of tubing arranged to lit a bore in the side rail of thesash, a spring pressed plunger being mounted in the tubing to slidingly press against the frame and so retain the sash against rattling while in any adjusted position in the frame.

With these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims.

In the accompanying drawings:

Fig. 1 is a side elevation showing a fragmental portion of the window sash mounted in a portion of a frame, the sash being partly in section showing my improved ten-k sioning device mounted therein.

Fig. 2 is a sectionalv View showing a short section of tubing with an internal abutment formed therein. c

Fig. 3 is a sectional view of the presser plunger. n' p i Fig; 4 is a section on line 4-4 ot the plunger. p

Y Fig. 'is a detail of the coil spring which exerts an outward pressure on the plunger.

Fig. 6 is a detail showing the screw which is to be threaded into the inner end of the plunger, the head being for the purpose of engaging the abutment and limiting the outward movement of the plunger.

Fig. 7 is a sectional View showing the removable parts with one end of the spring resting against one side of the abutment and the head of the screw engaging the other side'of the abutment to restrict the outward movement of the presser plunger against action of the spring.

Fig. 8 is an enlarged sectional view showing the device as mounted in the side rail of the window'sash and ressing against the surface of the window rame.

Fig. 9 is an edge view showing a portion of the window frame withportions of the upper and lower sashes mounted therein, the sashes being broken away showing my retainer mounted therein.y

Fig. 10 is a perspective view of a window frame with a plurality of my retainers mounted therein. l

It isfound in practice that a large majority of the windows which slide vertically in a frame are sutliciently loose in the frame so that when partially opened the sash will shake and rattle in the frame when affected by action of a breeze of wind often to the great annoyance of the occupantsv of the room particularly when this rattling occurs during rest or sleeping hours; and to obviatc this difliculty I have provided a very simple and inexpensive device which may be readily applied to the sash of a window by simply boring with a Abit from its outer surface into the side rail and. inserting into this bore the short length of tubing containing the spring pressed plunger so that when the window is again replaced in the sash the action of, this presser between the frame and i the sash will place the sash under tension `and .so eiiiectually prevent the saine from rattling; and the following is a 'detailed description of the present embodiment of my invention showing one arrangement of tensioning device by which these advantageous results may be accomplished: l

With reference to the drawings, 10 designates the window frame in which the inner sash 11 is mounted to slide vertically between the inner casing strip 28 and the parting strip 27 and the outer sash 29 between the parting strip 27 and the outer casing.

of which a tensioning device 13 is mount-Y ed. This `rdevice is provided with a presser plunger meinbei'llto exert a sliding pressure, when in the inner sash 1l, against the inner surface'l of the parting strip 27 and when inl the outer sash v29 to press against the inner face ofy the outer casing strip SO'to exert an inward pressure sufficient to make the sashes tight against leakage of air and also to prevent them from rattling in the frame. One form of tensioning device is herein shown which comprises a shortlength of tubing 16 in which a shoulder 17 is integrally formed by boring inwardly from the outer end 18 and then boring inwardlyfrom the inner end 19 leaving a portion of the stock between the bores, which forms the shoulder 17 with the central opening 20. In

the outer end of this bore is litted a presser plunger 21 which is preferably rounded on its outer end 22 to engage and slide in con Vtact with portions of the window frame.

This plunger has a threaded bore 23 on its inner end for the reception of a limit screw 24.

In assembling these parts the coil spring 25 is dropped into the outer end of the tubing 16 with its inner end resting against an abutment 17 and the presser plunger 21 is inserted to rest against the outer end ot the spring. p

In order to retain this plunger in position against the spring and also limit its outward movement under action of the spring, the screw 24 is threaded into the threaded bore 23 ol the plunger', ,the head 26 of the screw engaging the opposite side of the abutment 17 by which construction the plunger may be adjusted to limit the amount that it shall extend out beyond the end 18 of its tubing. Also it will be noted that the combined length of the screw and the plunger when assembled is less than the length of thetubing so that even when the plunger is pressed in so that its outer end is tlush with the end of the tube, the head of the screw is then inside of the opposite end of the tubing. By this construction it will be seen that it is only necessary to bore into the side rail of the sash and insert the tubing 16 with its plunger therein and when replacing the sash this plunger will slidably engage the frame and retain the window under suilicient tension to prevent it from rattling.

It will be seen that by my improved construction of device that it may be set in any desired position in the frame either to press sideways or inward or outward to engage the trame and prevent the window `'from rattling.y

The foregoing description is directed solely 'towards the construction illustrated, but I desire it to be understood that I reserve the privilege of resorting to all the 1nechanieal changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. In a window having a trame with inner and outer bearing strips for the edges of the sash and a sash slidable in the frame between said strips, a spring-pressed tension member comprising a tubular casing inserted into the edge of the sash having a spring pressed plunger `mounted in said casing to engage its outer bearing strip and eXert an inward pressure on the sash to make the window tight and prevent the Asash from rattling, and means for limiting the outward movement of the plunger inits casing.

2. In a window having a frame with inner and outer bearing strips t'or the edges of each sash a sash slidably mounted between said strips, a tube having a spring pressed plunger therein and inserted into the edge of the sash to engage the outer bearing strip thereolf and prss the sash inward to make the window tight and prevent the sash from rattling, a stop to limit the outward movement oi? the plunger in the tube, and an abutment for the spring and the stop intermediate the ends of the tube.

3. In combination with a window having inner and outer bearing strips, a tensioning device comprising a short length ot tubing ritting into a bore in the outer surface olf the side rail oi a window sash, said tubing having an abutment in its bore, a presser plunger at the outer end of the tube'pres'sing outwardly against the inner surtace'of its bearing strip, a pressure spring acting between the abutment and plunger, and a plunger stroke limit member connected to 'the plunger and having anenlargement to engage the opposite side of said abutment to limit the extending movement of said plunger.

l. A window tensioning device comprising a short length of tubing to fit a bore in the side rail of a window sash, said tube having an integral abutment in its bore, a presser plunger at the outerI end of the bore, a spring acting between the abutment and plunger to press the latter outwardly, a

lscrew threaded into the inner end of the plunger and having a head to also engage the abutment to limit the outward movement of the plunger, the combined length of the screw and plunger when assembled being less than the length of the tube. l

In testimony whereof I a'lTiX my signature.

EDWARD E. sMrrH. 

